Author: Streun, A.
Paper Title Page
TUPF09 Commissioning Experience and First Results From the New SLS Beam Size Monitor 519
 
  • V. Schlott, M. Rohrer, Á. Saá Hernández, A. Streun
    PSI, Villigen PSI, Switzerland
  • Å. Andersson, J. Breunlin
    MAX-lab, Lund, Sweden
  • N. Milas
    LNLS, Campinas, Brazil
  
  Funding: The presented work has received funding from the European Commission under FP-7-INFRASTRUCTURES-2010-1/INFRA-2010- 2.2.11 project TIARA (CNI-PP). Grant agreement no. 261905.
In the con­text of the TIARA work pack­age “SLS ver­ti­cal emit­tance tun­ing” (SVET), an ex­tremely small ver­ti­cal beam size of 3.6 μm, cor­re­spond­ing to a ver­ti­cal emit­tance of 0.9 pm, was ver­i­fied using an op­ti­cal mon­i­tor based on imag­ing of pi-po­lar­ized light. Since the ex­ist­ing beam size mon­i­tor reached its limit of res­o­lu­tion, a new mon­i­tor beam line was de­signed and in­stalled at the 08BD bend­ing mag­net of the stor­age ring of the Swiss Light Source SLS. Larger mag­ni­fi­ca­tion and op­er­a­tion at shorter wave­length pro­vide im­proved spa­tial res­o­lu­tion. Re­flec­tive op­tics en­ables con­ve­nient switch­ing be­tween dif­fer­ent wave­lengths. An op­ti­cal table is lo­cated in a hutch out­side the stor­age ring tun­nel to pro­vide ac­cess dur­ing op­er­a­tion. Mov­able ob­sta­cles in the beam path cre­ate in­ter­fer­ence pat­terns and thus pro­vide re­dun­dancy of model based analy­sis of the im­ages. In this paper we re­port on our com­mis­sion­ing ex­pe­ri­ence and pro­vide a com­par­i­son of the dif­fer­ent mea­sure­ment meth­ods at dif­fer­ent wave­lengths. 		 
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